Mississauga, incorporated in 1974, is a city in Southern Ontario located in the Regional Municipality of Peel, and in the western part of the Greater Toronto Area. With a population of just over 710,000, it is Canada's sixth-most populous municipality, and has almost doubled in population in each of the last two decades. Mississauga's growth reached a peak between the census years of 1986-1991, with the largest population growth in Canada (89,500). Sustained population growth has continued since, but at a somewhat slower pace. Mississauga is now the fourth most populous city on the Great Lakes, surpassing both cities of Milwaukee and Cleveland over the last decade.